Electric-motor control system



fi STABS iii.,

THORSTEN ZWEIGBERGK, OF'LONDON, ENGLAE'E.

ELECTRIC-MGTGR CTEQL SYSTEM.

Application cf August 2?, 122i. Serial No. $33,255.

To att whom t may concern.'

Se it known that THoRs'rnN Zwaresnnon, a citizen of the United States, residing at London, in the county oi London, lngiand, have invented a certain new and useful Improvement in Electric-Motor Controi Systems, of which the following is a s'uii, clear, and exact description, reference being had to the accompanying drawings.v

. This invention relates to an electric controlling system wherein an electrically driven controller is actuated through a Inanualiy operated master controller.

The essential object of the invention is t provide a simplified form ot such a system which shall be eii'ective in operation and by which the remote control of a comparatively heavy current may be readily accomplished,

More specifically, my device comprises an improved' and simplified arrangement accomplishing the results attained by the arrangement shown, described and claimed in entre No. 1,412,589, April n, i922.

By rny invention as herein disclosed the main controller may he positioned by the master controller in a certain position corresponding to the 'position oi the Amaster controller, by the use of a single solenoid switch instead of by the use of a plurality ot switches as in the before mentioned application. This results' in a `great simplification ot' the circuits necessary to bring about the resnit and each Wire from one controller to the other may be utilized in two or more positions ofthe controllers'.

rifhe essential characteristics of the invention are summarized in theclairns.

The drawing comprises a diagrammatic illustration of a preferred arrangement embodying rny invention, and the following description refers to the drawing by reference characters designating the various elements of the system. p

The controller which I designate herein as the main controller, is illustrated as comprising a drum carrying a plurality of main contact plates, 11 to 19, inclusive, While the broken lines l to 9, inclusive, parallel with the axis of the drum correspond to the various positions of the controller.

-At l.20 is indicated the, main power wire carrying the current it is desired to regnlate hy the main controller. rllhis wire leads current to the Contact 2i with which a. contact 22 is adapted to co-act. Frein contact 22, the current passes through wire 2- to resistance 25, t which are connected the contacts 3l to 39, inclusive. From the resistance 25, tvire 26 leads through the ield and arrnatnre windings of the main rnotor 2'? and to the ground as indicated at 28.

is the contact plates il to 19 are brought successively ander the contacts 3i to 39 respectively, it will loe seen that resistance in the main motor circuit will be progressively cut ont since the contact plates li to 19 are electrically connected hy wire 30, and the contacts 3l to 39, inclusive, are connected to different parts of resist'ancep25 in a usual manner.

Moving with the main controller, and for convenience shown as mounted on the same drum, are auxiliary contacts 103, and 112 to H9, inclusive, which co-operate with the manually operated rnaster controller to govern a relay in the operation of the system and thereby govern the operation o a pilot motor which sets the main controller in positions determined loi the position of the master controller, as will be hereafter more fully descriioed.

The main controller drum is illustrated as rotated by a pilot or auxiliary motor et) whose armature shaft il may carry a worm n co-acting with the Worin gear i3 on the shaft ot the main controller drum. The circuit through the motor e() proceeds from a power wire A through the usual resistance 4:5, the eld coils 48, Wire 46, stationary contact 46',

contact plate 4:7, stationary contact 58', wire 5S, the armature brushes 57, and armature, the Wire 59, the stationary contact 59', to the grounded Contact plate 49 when the parts are in the position iilustrated. An arm 52 is shown as rigidly attached to the arrn 54; carryin the contact 22, and having a core 55 within the solenoid c oil 56 to actuate the contact 22, as Well as move the arm 52. This arm 52 carries the contact plates 47 and 49 just above mentioned, aswell as the contact. plate 120 which will. be subsequently referred to. The contact plates`120 and 49 are suitably grounded as shown. The solenoid 56 may thus be designated as a reversing relay as the position of arm 54 determines the direction of rotation of the pilot motor 40.

The contact plates 49 and 120 are connected `to thel ground. The contact plates 47, 49 and 120 are on the arm 52 and move therewith, the arrangement being such that in the lower position of this arm (which is the position shown in the drawings), the wires 46 and 58 are connected by means of their Contact 46', 58 and the plate 47, while the wire 59 is grounded through the contact plate 49, contact plate 120 being inoperative in .this position ofthe arm. In the up er position of the arm, wire 58 is groun ed through contact 58', and contact plate 120, and the wires 46 and 59 are connected by means of their contacts 46 and 59', and the contact plate 47, contact plate 49 being inoperative in' this position of the arm.

The wire 59 is connected to a wire 60 carrying the contact 61 adapted to be connected by the bridging member 62 of the solenoid core 63, to grounded contact 61', whereby the wire 59 is grounded when the bridge member 62 is in its lower position, Iso that this solenoidconstitutes a short circuiting relay.

The master controller is diagrammatically indicated at 75 and`may conveniently take the form of a rotatable drum carrying -a series of contact plates whichrA are adapted to be brought into electric connection with stationary contact points 80 to 86 inclusive, and the grounded contact 87 The contact plates on the master controller drum consist of the selective series of contact plates 92, to 99, inclusive, which are all connected with the plate 100. The upper portion of the drum is shown as provided with contact plates 101, 102, which are connected together. Plates 92 t 96, inclusive, co-act with the stationary contact plates 82 to 86, inclusive, in the various positions to which the main'controller drum may be moved, the positions being indicated by the broken lines 1 to 9, inclusive. When the master controller L75 is placed in any one of these positions, the connections are such as to cause the main controller to be brought to the correspondlngly numbered position to thereby determine the resistance placed in circuit with the main motor 27. The-contact plates 101 and 102 are' electricall connected and extend through all of t e positions 1 to 9, so as' to close the circuit from the power wire connected to the contact 80, through contact 481, wire 90, solenoid coil 56 and the ground at 91, so that in any one of these positions of the master controller, the solenoid circuit through 56 is closed and the core 55 is drawn upward to close contact between'points 21 and 22 andsend a current through the main' motor circuit.

The stationary contacts 82 to 86, inclusive, are respectively connected by means of the wires 82 to 86', inclusive, with stationary contacts 82" .to 86", inclusive, respectively, which are adapted to co-operate with the series of selective contact plates mounted on the drum of the main controller. The series of contact plates on this drum are allconnected to the single plate 103 which extends through all of the positions of the drum, so as to be always connected with the stationary contact 104 connected by wire 66 to the solenoid coil 64, connected to the wire in turn connected to power Wire 44.

The series of contact plates on the main controller designated 112 to 119, inclusive, co-operate with the plates 92 to 99, inclusive, to bring the main controller into a position corresponding to the Iposition oc- `cupied by the master controller.

Thespeciic arrangement of' the contact `plates whereby the above result is brought about is as follows: The cbntacts 92, 93, 94, and 95, each occupy positions 2, 3, .4, and 5, respectively on the drum, so that the wires 82 to 85', inclusive, are connected to these plates respectively only in a single position of the master controller. The c orresponding plates 112 to 115, inclusive, on the main controller, however, each occupy position 1, and are progressively longer, so that 112 occupies position 1; 113, positions 1 and 2; 114, positions'l, 2, 3; etc. The contact 96 on the master controller, however, may be termed a bridging contact and it occupies a position beginning with position 6, which marks the beginning of the second series. The corresponding bridging contact 116 on the main controller extends from position 1, through 6, so that it serves to move the main controller into position to operate the second series of contacts, as shown comprisin 97, 98, and 99, on the master controller, an 117, 118, and 119, on the main controller. It will be seen that contacts 96, and 116, serve two functions, that is, they serve to bridge over from one set to the other, and they serve as positioning means to stop the main controller at the first position of the second series, namely, position 6, when the m-aster controller is stopped at position 6. Each of these contacts 117, 118, 119, are arranged in a` progressive manner similar to the arrangement of 112, 113, 114, except that they begin at position 5. Each of the contacts 97, 98, 99, occupy a single position.

The operation of the system is as follows:

In the position shownin the drawings, the master controller 75 is in oil position and the main controller is in its rat posi- Memos@ 'wire 90, solenoid coil 56, and ground 91,

whereupon the solenoid core 55 o the re vel-sing relay will be drawn upward' and the circuit of the main motor will be closed at points 21, 22. The circuit through this mes tor will be from' ower wire 20, contacts 21, 22, wire 24, resistance 25, Wire 26, main motor 27 to ground 28, none of the resistance being cut out. This init-iai position -of the master controller will not aitsr the position of the main controier which will remain in position 1.

VVheu, however, the master cootroiier is moved to position 2, the current through the solenoid 56 wil continuo as before and the current through 'the main motor 2? wii continue as before` vbut a current will fiom' from power wire 44 through resistance 45, ed windings 48 of piiot motor 4G, wire 4G, Contact 46' piste 47, contact 59., Wire 5%, armature brushes 57, and arma-'zure Wire 58, Contact 58", Contact 120 to groun,

The wire 59 is not grouned by means of the wire 6G at this time, because the l'oridge member 62 carried by the sore S3 'siii be ifted by the soienoci 6, The current through this soenoid Wi proce-s from power wire through the Wire f Contact. 104., Contact gste 162, so

o'oac 82, Wire 82", so

92, contest piste une. xis circuit as to "orssy c u piace when the rum reaches second posif orab rum reaches sewn-CT. 'positivi "ffst meutoneol is broken amps, tiiereay s'iort circuit." o the raoo: The rst seesistsrice in ties mot g ciw out oir-5:; circuit. 'ars occurs when 'the must; brought to thir position, e. currenttoougl. the sofenoi v3' contacts 83, etessri 'the ci broken when the mein eoritroiwer position 3. f

It s'houic'l oe noted eiso that such that if Vthe mester :nostro medateiy turned to one of the second set, namey to positions #3, "3', SE, the circuit through the soenoc be maintained unti the mais. eontroier reaches the position corresponiug to occupied by the master eontroiier. Thus,

suppose the master controier to be morfeo. from 'the position shown in -the drawing to position 8, for instance, than the eurrent will be maintained through the soieoid 6 4 as foio'ws: rom power Wire 44, Wire 55, soienoid 64, wire fifi., late 103, plate 116, wire 86" piste 96, piste 100, contact 87 to ground. Au this circuit 'will oe continued amti after position 5 is reached by the main controier. 1u fact the circuit wii continue untii the main controier reaches position' 6. However, as soon as position 5 is reached by the main eontroer there wi also be the following circuit; power wire 44., wire 65, solenoid 64, Wire *55, plate 103, contact 118, wire 83', Contact piste 98, contact plate 1GG,`and contact 3? to ground, so that the solenoid current Wi be broken oniy when the main controiier reaches position 8.

It Wii; apparent e third series of contants might be provied by using a seeoee pair oi bridging contacts on the master :mi main oontroier, and that such arrengemerr; might be continued imieuiteiy.

1t xviii be seen when the master corr;- troiier is again brought to o position, since the arm 52 is iowere the current tirouggli 'the tielc Wiodinffs or the motor 4G Wifi maintained as eej-fore wlfsiie the eurreoi: through 'them-motore be in 'the y direction so the motor xiii *roceei tum the d'rre the mais control;vv ci to "om st se' hoi-ing y provie-fi,

motor for progessv s motor ercui'e may;

:rooster eoutroiier oy means o' .s of seeetws sommets on the eontroers ein. by tire use s single current operse swift-eh, resistorrce may be progres- -sivey out of tile circuit of the mais motor,

may, if it s hemmt desirsbe, slss poy a uorvoitage reease arrangemerlt such as is shown in my Patent No. 1,412,589, referred 'to above, whereby f the circuit through the main motor isbroken ai; any time, it oennot be renewed unti the main conti-011er has been returned to its ntia iso position. As such an arrangement could be brought about in the same manner as shown in my application above referred to, I do notconsider it necessary to illustrate the arrangement herein.

lVhile I have described a specific form Lin which the principles of my invention may be embodied, it is apparent that many changes might be made therein, within the scope of my invention and the 'foregoing description should be understood to be illustrative of a particular embodiment of my invention rather than as restrictive of its character and scope.

Having thus described my invention, I claim:

1. The combination of a controller, an auxiliary motor for actuating the controller, a master controller, a plurality of means moved with the controller and a relay successively operated by said means to control said auxiliary motor through connections on the master controller. y

2. The combination of a controller, an auxiliary motor for actuating the controller,

a plurality of means moved with the controller and a short circuiting relay successively operated by said means to control said auxiliary motor.

3. The combination of a controller, an auxiliary motor for actuating the controller, means for short c-ircuiting said auxiliary motor to stop it, said means comprising a successively operated relay controlled by a plurality of contacts moved with the controller.

4. In a system of the class described., the combination of a motor in an 'open main circuit, and variable resistances, means for closing said circuit, a main controller adapt-- ed to successively vary said resistances, a motor for actuating said controller, a master controller` a series of auxiliary contacts moved with the main controller, and a sin gle circuit switch selectively operated by said contacts for governing said auxiliary motor under control of said master controller and said-auxiliary contacts.

5. The combination of a main controller, an auxiliary motor for operating the main controller, a master controller for governing the main motor circuit and auxiliary motor circuit, a series of contacts moved with the main controller and a relaycontrolled by said contacts and adapted to control the stopping and starting of the auxiliary motor at each successive position of the main controller. l

6. The combination of a; main controller, an auxiliary motor for operatin the main controller, a master controller or govern- -ing the main motor circuit and auxiliary motor circuit, a series of contacts movedwithl the main controller anda relay for making and breaking a circuit controlling the stopping and starting of the auxiliary motor at each successive position of the main controller, and connections whereby the master controller closes a circuit to said main motor directly in the initial position of said main controller.

7. The combination of a main controller movable to successive positions, an auxiliary motor for moving the main controller, al master controller for governing said main motor circuit and said auxiliary motor, a relay for short circuiting the armature of said auxiliar motor consequent upon the main controllerreaching a position corresponding to that of the master controller.

8. In combination, a motor and resistances in circuit therewith, a main controller for cutting out said resistances in a series of successive positions, an auxiliary motor for actuating said main controller, a circuit therefor, a master controller governing said circuit and the circuit of the main motor,

means whereby first and each successive po' sition of the master controller may close the circuit through the main motor, a series of auxiliary contacts movable with the main controller, a relay governed by the master controller and sald contacts for successively controlling the circuit of the auxiliary motor to stop it in each successive position of the main controller, and means for reversing said auxiliary motor consequent upon breaking of the circuit through the main motor.

9. In a system of the class described, the combination of a motor in an open main circuit, a variable resistance means for closing said circuit, a main controller adapted to successively vary said resistance, an auxiliary motor for actuating said controller, a master controller, a series of auxiliary contacts moved with the main controller, and a circuit making and breaking .device for governing said auxiliary motor under control of said master controller and said auxiliary contacts, and means actuated by the main circuit closing means to reverse the motor under control of the contacts by the main controller.

10. The combination of a main controller, an auxiliary motor for actuating the controller, a master controller, a series of selective contacts on the master controller, a. series of selective contacts on the main controller, the contacts on each controller being connected together, means for selectively connecting the contacts on the two controllers in various positions of the controllers, a solenoid coil, and a connection whereby a circuit is formed through the solenoid coil when said contacts on the different controllers are connected, and means controlled by' the solenoid coil for making and breakin the auxiliary motor circuit.

1'1. T e combination of a main'controller,

an auxiliary motor for moving the main controller, a master controller, a series of selective contacts on the master controller, a series of selective contacts on the main controller, and connections therebetween when the master controller is brought to a position in advance of the 'position of the main controller a connection is ef- Y fected between the contacts of the two controlleis until the main controller reaches a correspondin position, a. solenoid coil, a

switch contro led thereby, said switch gov-V erning the circuit of the auxiliary motor and a connection between the contacts o each controller and the wires of the solenoid circuit, whereby a circuit is closed through the solenoid coil when said contacts are connected. Y

12. The combination of a main controller,

an auxiliary motor for actuating the controller, a master controller, a series of selective contacts on the master controller, la series of selective contacts on the main controller so 'arranged that when the master controller is brought to a position in advance of theposition of the master controller a connection is effectedI in soenoid is not energized, and a connection between the contacts of each controller and the wires ofthe solenoid circuit, whereby the circuit is formed through the solenoid coil when said contacts on the two controllers are connected.-

13. The combination of a main controller a pilot motor for actuating the controller, a plurality of contacts on said controller connected to a solenoid coil, a master controller, a plurality of contactsthereon connected to the return .line of said solenoid coil, a mein-C ber actuated by said coil to start and stop the auxiliary motor, and means for connecting certain contacts on one controller to certain contacts on the other controller to cornplete said solenoid circuit in various positions of said controllers. v 14. In an electrical controller system, two controllers, -a set of progressively arranged contacts )on the first controller, each occupying at lastone position and each Isucceedmg contact occupying a position not occupied by any of the preceding ones, a set of contacts on the other controller each extending through the same first position and progressively arranged so as to successively extend through the positions occupied by the preceding contacts and one ad itional-position, a second set of contacts on each controller arranged similarly lto the first set onv each controller, bridging members between said sets on each controller extending respec-w progressively arran e of each group being pro tively through thesition-of the second set on the first control er, and through the positions of the first series on the second controller respectively, means` for connecting cause the second controller to be moved to correspond to the position to which the other controller has been moved.

15. In an electrical controller system, two controllers, means for positioning one controller by means of the other controller, said means comprising a plurality of sets of contacts on each controller, the contacts in each set being progressively arranged, bridging contacts respectively occu ying all of the positions of the next succee 'ng set of'contacts .on one controller and correspondin bridging contacts each occupying all of t e positions of the preceding sets of contacts on the other contro ler, connecting means for connectin the corresponding contacts on one contro ler with the corresponding contacts on the other controller when their respective controllers occupy itions corresponding tothe positions of t e contacts respectively, and means connecting all of said contacts on one controller with one wire of a circuit, and all of the contacts of the `other controller with a return wire of said circuit. c

16. In an electrical controller system, two controllers each havi selective contacts i thereon whereby when the first contro ler is moved toa position in advance of the osition occupied by vthe second controller, t ese contacts on the progressively arranged contacts on'the first controller arranged inv groups, each contact ssively positioned relative to the other, an each contact occuymotor driven main controller, a plurality ofV pyin a position on the controller not occupied y any of the other contacts, sets of contacts positioned on the main controller and progressively extending thro h additiona positions corresponding to t e'positions of the individual contacts on the master controller, bridging members connecting the contacts ineach set thereof, connections between the respective controllers whereby a source of energy during the period the circuit is established extending to a, selected auxiliary motor is actuating the main conposition of the master controller and initial troller t0n selected position. l and intermediate positions as well as a. se- In testlmony whereof, I hereunto aix my 5 lected position of the main controller, and Slgnatlll'emeans associated with the master controller -for connecting the auxiliary motor to a. THORSTEN ZWEIGBERGK. 

